Water transportation includes inland river transportation and ocean transportation. It has a long history and is called "ancestor" of transportation.In the 18th century, it dominated the production of transportation.Water transportation has the advantages of low investment, low cost, large freight volume and small area. Good channel passing capacity can be almost unrestricted.Some inland waterway and seaport can only be closed due to freezing in winter, and some inland waterway and seaport can not meet with the economic requirements of transportation.At present, comprehensive transportation has become a major trend of world transportation development. The construction of modern comprehensive transportation network has created conditions for giving full play to the advantages of water transportation.
